1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GrogVix [38]
3 years ago
12

Please and thank you !

Biology
2 answers:
Leona [35]3 years ago
7 0
Who knows man who knows
Alborosie3 years ago
7 0
7. Each cell only has one nucleus because if it had more then one there would be an over production of everything in the cell.

8. I don’t know, I’m sorry
You might be interested in
A cell is placed in a water solution with the same salt concentration as the cell. The cell is placed in a _____.
Oksanka [162]
Isotonic solution.
Since it has the same salt concentration as the cell the solution is neither hypotonic or hypertonic.
4 0
4 years ago
Read 2 more answers
Which class iv calcium channel blocker is exclusively administered to treat acute supraventricular tachycardia?
Likurg_2 [28]
The class iv calcium blocker that exclusively administered to treat acute supraventricular tachyxardia is Diltiazem.  Calcium channel blockers obstruct the movement of calcium into conductive and contractile myocardial cells by inhibiting the influx of calcium through its channels, causing a slower conduction through the SA and AV. Diltiazem is administered intravenously to treat acute supraventricular tachycardia. 
3 0
3 years ago
ONLY ANSWER IF YOURE AN EXPERIENCED FISH KEEPER<br> is my female swordtail pregnant?
LenKa [72]

Answer:

I don't know what your fish looks like but I will try my best :)

To accommodate the developing eggs, the mother's body expands, becoming deeper and broader. A few days before delivery, she develops a bulge below the gills, her outline becoming fairly square in this region, while the gravid spot has enlarged its area. The female swordtail and guppy will both give birth to anywhere from 20 to 100 live young after a gestation period of four to six weeks, and mollies will produce a brood of 20 to 60 live young after a gestation of six to 10 weeks.

Explanation:

4 0
3 years ago
Use the drop-down menus to complete each statement.
EleoNora [17]

Answer:

1. Bureau of Land Management

2. US Fish and Wildlife Service

3.US Forest Service

4. Bureau of Land Management

5.National Park Service

Explanation:

4 0
3 years ago
In 3-5 sentences, describe the human respiratory system and its functions.
Liula [17]

Answer:

The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary history. In land animals the respiratory surface is internalized as linings of the lungs. Gas exchange in the lungs occurs in millions of small air sacs called alveoli in mammals and reptiles, but atria in birds. These microscopic air sacs have a very rich blood supply, thus bringing the air into close contact with the blood. These air sacs communicate with the external environment via a system of airways, or hollow tubes, of which the largest is the trachea, which branches in the middle of the chest into the two main bronchi. These enter the lungs where they branch into progressively narrower secondary and tertiary bronchi that branch into numerous smaller tubes, the bronchioles. In birds the bronchioles are termed parabronchi. It is the bronchioles, or parabronchi that generally open into the microscopic alveoli in mammals and atria in birds. Air has to be pumped from the environment into the alveoli or atria by the process of breathing which involves the muscles of respiration.

Explanation:

5 0
3 years ago
Other questions:
  • Why does it make sense for scientist to test just one variable at a time in an experiment?
    15·1 answer
  • Why do atoms gain, lose, or share electrons?
    12·2 answers
  • How does waste filtered by kidneys leave the body?
    6·2 answers
  • Which of the following is not a common atmospheric pollutant?
    7·1 answer
  • Why is it important to understand the breakdown of water into its ions before learning about acidity
    12·1 answer
  • Capelin are fish found in the Atlantic amd Arctic oceans. In spring and summer, capelin are usually seen in the region between I
    7·2 answers
  • Christina and her friends are discussing the theory of evolution. One friend states that there is no evidence to support the the
    8·1 answer
  • Bacteria can reproduce by exchanging DNA. This exchange is called:
    9·1 answer
  • Can anyone help me with this question?
    9·2 answers
  • Two examples of diffusion in plants and two in humans or animals.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!